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Arctic regions
2
Haemophilus influenzae
2
Pneumococcal infections
2
Streptococcus pneumoniae
2
pneumococcal vaccines
streptococcal infections
2
Adolescent
1
Adult
1
Age Distribution
1
Age Factors
1
Aged
1
Canada
1
Child
1
Humans
1
Incidence
1
Infant
1
Infectious and parasitic diseases
1
Medicine
1
Meningococcal Infections
1
Middle Aged
1
Newborn
1
Population Surveillance
1
Preschool
1
R
1
RC109-216
1
Research
1
surveillance
1
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